XeNTaX

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from PIL import Image
from json import load as json_load
from pathlib import Path
from sys import argv, exit

def split_image(json_path: Path, dst_path: Path):
    with json_path.open(encoding="utf8") as f:
        description = json_load(f)

    src_filename = description["imagePath"]
    src_name = description["name"]
    
    src_img = Image.open(json_path.parent.joinpath(src_filename))

    for desc in description["SubTexture"]:
        subname = desc["name"]
        x = int(desc["x"])
        y = int(desc["y"])
        w = int(desc["width"])
        h = int(desc["height"])
        # Ignoring framing, gettting raw pixels
        print(f"Saving {w}x{h} part from {src_filename} {x}:{y} as {src_name}.{subname}.png")
        src_img.crop((x, y, x + w, y + h)).save(dst_path.joinpath(f"{src_name}.{subname}.png"))

if __name__ == "__main__":
    if len(argv) not in (2, 3):
        print(f"Usage: {argv[0]} <json file|folder with jsons> [output dir]")
        exit(-1)

    json_path = Path(argv[1])
    dst_path = Path("" if len(argv) == 2 else argv[2])

    if not json_path.exists():
        print(f"Source not exists: {json_path}")
        exit(-1)

    if dst_path.exists() and not dst_path.is_dir():
        print(f"Output directory incorrect: {dst_path}")
        exit(-1)
    dst_path.mkdir(exist_ok=True)

    try:
        if json_path.is_file():
            split_image(json_path, dst_path)
        else:
            for json_file in json_path.glob("*.json"):
                split_image(json_file, dst_path)
    except Exception as e:
        print(f"Got an error {e} when splitting {json_path}")

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python script.py example.json

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python script.py folder_with_jsons

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python script.py json_or_dir output_dir

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python C:\Users\????\Desktop\002\LotPcutter.py C:\Users\????\Desktop\002\3331002_tex.json